What is video2dsprite?

A workflow for turning a still image of a 2D character into animation sprite assets, which are individual images used to create game movement. It uses Grok Build's image and video tools, then extracts and processes video frames.

Use it for video-sourced run, walk, or idle motion and denser game animation sprites. It only applies when Grok Build's required video tools are available.

It can produce more motion poses from a generated video than a single still image. It also prepares the frames as strips, grids, or GIFs for further use.

video2dsprite — Skill for Claude Code and Codex by gabrielmoreira

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add gabrielmoreira/agent-skills-mirror --skill video2dsprite

Clone the repo

git clone --depth 1 https://github.com/gabrielmoreira/agent-skills-mirror

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/video2dsprite/github.svg)](https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/video2dsprite)

Your own site

<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/video2dsprite"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/video2dsprite/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/video2dsprite"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/video2dsprite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 215 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,982 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00215	$0.03982
Opus 5.5	$0.00086	$0.01593
Sonnet 5.5	$0.00043	$0.00796
Haiku 4.5	$0.00021	$0.00398

Measured 18d ago against content hash 5c14c84df107, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

video2dsprite scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 18d ago.

The scan reads SKILL.md. This mod also ships 19 executable files (references/packed-alpha-runtime.js, references/runtime/forge-runtime.mjs, references/runtime/packed-alpha-webgl.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to video2dsprite — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

mirrors/repos/0x0funky@agent-sprite-forge/skills/video2dsprite/SKILL.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Video to 2D Animation

An approved still sets identity and geometry, a video model supplies motion, and deterministic tools prepare it for the engine. Video is not promised to be smaller, seamless or cheaper than sheets.

Use when

Animating a character or creature: every action comes from one approved master still, one clip per action.
Fluid motion from an accepted master: idle breathing, walks, runs, attacks, casts, hair, capes, creatures.
A supplied clip must become transparent, registered, looped frames and engine video.

Do not use when

FX, icon or prop sheets: generate2dsprite.
Water, fire or mist inside a still scene plate: generate2dmap. Only an API or CLI call: generate2dmedia.
Code-drawn animation the user asked for: codeart2d.

Capability check (once per session)

Run python "<skill-dir>/../generate2dmedia/scripts/forge_doctor.py" --host-tools <tools> --save <output>/doctor.json, where <tools> lists the media tools in your own tool list (image_gen, image_edit, image_to_video) or none. Its ROUTES block shows which API keys are configured (yes or no), the local readiness and the resolved order. If encoding.stdout fails, set PYTHONUTF8=1. python "<skill-dir>/scripts/video2dsprite.py" doctor checks ffmpeg (5.1+, VP9 alpha round trip).

Art source

The master still comes from generate2dsprite (image generation, approved by the user) or from the user. Motion is image-to-video, one clip per action from that master; record the route as art_source and name it in your reply:

API, when a key is configured: xAI Grok Imagine Video (XAI_API_KEY), BytePlus Seedance (ARK_API_KEY) or fal.ai (FAL_KEY: Kling v3, Veo 3.1, Luma Ray 3.2, MiniMax H3, Wan 3.0, Vidu Q3, LTX) (route-media.md). The configured key is the owner's consent, so there is no per-call question. --last-frame <still> pins idle and attack clips to end on their first pose.
Local: your own image-to-video tool (Grok's native image_to_video) when you have one, otherwise the user's Grok CLI in ACP mode (it cannot pin a last frame; the result says lastFrameUsed).
A clip the user supplies (no account needed).
codeart2d only when the user explicitly asks for code-drawn animation, or when route_media.py prints no-route (exit 3); otherwise prepare the job and prompt, explain the gap, and never invent a successful generation.

Read the full file on GitHub · 109 lines

Files

What ships with it

29 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

18d ago Changed · -97 lines · +91 tokens per session 5c14c84df107
1mo ago First seen · 206 lines · 124 tokens per session scan A d6d5a642dc10

Subscribe to this mod's changes

video2dsprite is a skill published in the GitHub repository gabrielmoreira/agent-skills-mirror (19 stars, last pushed yesterday), licensed MIT. It adds 215 tokens to every session and 3,982 once invoked, about $0.0009 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to video2dsprite, differing in 0 lines, and is treated as a copy.

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video2dsprite